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<title>Returns the number of warnings from the last query for the given link</title>
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<h1 class="refname">mysqli::$warning_count</h1>
<h1 class="refname">mysqli_warning_count</h1>
<p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">mysqli::$warning_count</span> -- <span class="refname">mysqli_warning_count</span> — <span class="dc-title">Returns the number of warnings from the last query for the given link</span></p>
</div>
<div class="refsect1 description" id="refsect1-mysqli.warning-count-description">
<h3 class="title">Description</h3>
<p class="para">Object oriented style</p>
<div class="fieldsynopsis"><span class="type">int</span> <var class="varname"><a href="mysqli.warning-count.html">$mysqli->warning_count</a></var>;</div>
<p class="para">Procedural style</p>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>mysqli_warning_count</strong></span>
( <span class="methodparam"><span class="type"><a href="class.mysqli.html" class="type mysqli">mysqli</a></span> <code class="parameter">$link</code></span>
)</div>
<p class="para rdfs-comment">
Returns the number of warnings from the last query in the connection.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
For retrieving warning messages you can use the SQL command
<em>SHOW WARNINGS [limit row_count]</em>.
</p>
</p></blockquote>
</div>
<div class="refsect1 parameters" id="refsect1-mysqli.warning-count-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">
link</code></em></span><dd>
<p class="para">Procedural style only: A link identifier
returned by <span class="function"><a href="function.mysqli-connect.html" class="function">mysqli_connect()</a></span> or <span class="function"><a href="mysqli.init.html" class="function">mysqli_init()</a></span>
</p></dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-mysqli.warning-count-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Number of warnings or zero if there are no warnings.
</p>
</div>
<div class="refsect1 examples" id="refsect1-mysqli.warning-count-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-1689">
<p><strong>Example #1 <var class="varname"><var class="varname">$mysqli->warning_count</var></var> example</strong></p>
<div class="example-contents"><p>Object oriented style</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$mysqli </span><span style="color: #007700">= new </span><span style="color: #0000BB">mysqli</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE TABLE myCity LIKE City"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* a remarkable city in Wales */<br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO myCity (CountryCode, Name) VALUES('GBR',<br /> 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br />if (</span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">warning_count</span><span style="color: #007700">) {<br /> if (</span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SHOW WARNINGS"</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">fetch_row</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%d): %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]);<br /> </span><span style="color: #0000BB">$result</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /> }<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">$mysqli</span><span style="color: #007700">-></span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>Procedural style</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">mysqli_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_user"</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_password"</span><span style="color: #007700">, </span><span style="color: #DD0000">"world"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* check connection */<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">mysqli_connect_errno</span><span style="color: #007700">()) {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect failed: %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">mysqli_connect_error</span><span style="color: #007700">());<br /> exit();<br />}<br /><br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"CREATE TABLE myCity LIKE City"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* a remarkable long city name in Wales */<br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO myCity (CountryCode, Name) VALUES('GBR',<br /> 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br />if (</span><span style="color: #0000BB">mysqli_warning_count</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">)) {<br /> if (</span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">mysqli_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #DD0000">"SHOW WARNINGS"</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">mysqli_fetch_row</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s (%d): %s\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">], </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]);<br /> </span><span style="color: #0000BB">mysqli_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /> }<br />}<br /><br /></span><span style="color: #FF8000">/* close connection */<br /></span><span style="color: #0000BB">mysqli_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above examples will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Warning (1264): Data truncated for column 'Name' at row 1
</pre></div>
</div>
</div>
</div>
<div class="refsect1 seealso" id="refsect1-mysqli.warning-count-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="mysqli.errno.html" class="function" rel="rdfs-seeAlso">mysqli_errno()</a> - Returns the error code for the most recent function call</span></li>
<li class="member"> <span class="function"><a href="mysqli.error.html" class="function" rel="rdfs-seeAlso">mysqli_error()</a> - Returns a string description of the last error</span></li>
<li class="member"> <span class="function"><a href="mysqli.sqlstate.html" class="function" rel="rdfs-seeAlso">mysqli_sqlstate()</a> - Returns the SQLSTATE error from previous MySQL operation</span></li>
</ul>
</p>
</div>
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